Electrical receptacle



May 4 1926.

1,582,957 c. E. AVERY ELECTRICAL RECEPTACLE Filed Dec. 2, 1922 IN VE NTOR ATTORNEY Patented May 4,1926. I

PATENT OFFICE.-

CHARLES E. AVERY, OF EAST ORANGE, NEW JERSEY, ASSIGNOR TO MANHATTANELECTRICAL SUPPLY COMPANY. INCORPORATED,- 0F JERSEY CITY,'NEW JERSEY, A

CORPORATION OF MASSACHUSETTS.

ELECTRICAL nncnezracnn.

Application filed December 2, 1822- Se rial No. 804,466.

To all whom it may cormern:

Be it known that I. Cnannns E. Avnnr, a citizen of the United States ofAmerica, and residing at East Orange, in the county of Essex and Stateof New Jersey, have in-,

vented new and useful Improvements in Electrical Receptacles, of whichthe followin is a specification.

My invention relates particularlyto a device ada ted to accommodate twoseparate plugs eit ier of the tandem or parallel blade type.

The main 'objectis to provide a compact and reliable device whidh madeeconomically and readily wired.

In its referred form the-device has a one piece bo y with the usual Tshapedentrance slots and recesses containing specially formed simple,can be contact members and binding screws readily accessible in groovesin the sides of the body.

Fig. 1 is a :front view and partial section of a device embodying theimprovements of my invention.

Fig. 2 is a side of the same.

Fig. 3 is a bottom plan view but with one of the filling pieces removed.

Fig. 4 is a transverse sectional view. Fig. 5 is a perspective view ofone ofthe contact members on an enlarged scale.

Fig. 6 is a detail view of a blank from which one of the contact isformed.

Fig. 7 is a detail view of the filling piece omitted from Fig. 3.

The body 8 of the receptacle is preferably formed of one piece ofinsulating material such as porcelain or molded composition and has fourrecesses opening at the back with T shaped entrance slots 10 in thefront. These recesses are arranged in pairs on opposite View and partialsection I sides of the receptacle, the recesses of a pair beingconnected by a longitudinal Channel 11 in order to accommodate a contactmemthe recesses 9 in line with the entrance slots 10. Thebar- 12 has-raninte'tiifa'lflange-16 which fits in a recess in the back of therecept'acle alongside'tl'ie channel 11 and issccured to the receptacleby means of a. terminal plate 17 in a recess in the front of thereceptacle and the screws 18 which passthrough the receptacle. A bindingscrew 19 hasa threaded engagement in the plate 17 for securing the endof a conductor in place. The

wall of the receptacle adjacent the head ofthe screw 19 serves-to holdthe end of the wire in place. The opposite sides of the receptacle areprovided with grooves 20 for the conductor wires, and the fiange'lfifindter. minal plate 17 are preferably shaped to correspond with the curved-.wall of these grooves.

.On the plane of the rear edge of the connecting ar 12 I may provide ashoulder 21 to serve as additional support for a filler piece such asshown in Fig. 7 which is preferably formed of fibre or paper with heads22, 1 and a connecting strip 23 adapted to fill in the space between andcover the channel This filler pieceis made just enough larger than therecess in the receptacle so that it can be readily inserted and yet willbe held frictionally in place and serve to prevent the. filling wax fromrunning into the recesses 9 and interfering with the contact.

25 fitting in a recess in the end of the bod and held in place by ascrew 26.

The body may also be provided with a central seat 27 to receive a screwfor holding a face plate in position.

This invention has the advantages of a one piece body together with theadvantages of combination contacts adapted to receive either kind ofstandard plug blades. The contact members themselves are so constructed-that they can be readily manufao tured according to standardpatterns and require no particular skill in assembly. The parts are soconstructed as to require a min imum number of screws for holding themtogether. \Vhcn once assembled. the parts are protected againstaccidental, displace- 22 adapted to fit the recesses 9. 9.

ment or mischievous tampering. It will also be noted that the parts areso constructed as to produce a compact device free of fragile projectingparts and having a neat, attractive and workmanlike appearance.

I claim:

1. A receptacle comprising a one piece body having two recesses on eachside of the center line connected by longitudinal channels and with Tshaped entrance slots, a longitudinal bar arranged on edge in eachchannel and having a flange in the rear, a contact secured on each endof each bar in 'said'recesses, terminal plates mounted in the face ofsaid body and attaching screws connecting said flanges and said platesand securing'said bars and said contacts in p0sition. 1 r 4 2. Areceptacle comprising a one piece bodyhaving two recesses on each sideof the center line connected by longitudinal channels and with T shapedentrance slots, a longitudinal bar arranged in each channel and having aflange in the rear, :1 contact secured on each end of each bar in saidrecesses. terminal plates mounted in the face of said body and attachingscrews connecting said flanges and said plates and securing said barsand-said contacts in position, and; filling strips fitting in saidrecess and covering said channels.

3. A receptacle comprising a body having two recesses on each'side ofthe center line connected by longitudinal channels and with T shapedentrance slots, a longitudinal bar arranged in each channel and having aflange in the rear, a one piece contact secured on each end of each barin said recesses, a main blade and two auxiliary blades at right anglesthereto, terminal plates mounted in the face of said body and attachingscrews connecting said flanges and said of said recesses and accessiblethrough its entrance slot, terminal plates with binding screws mountedin said side recesses and accessible at the front of said body andattaching screws connecting the base flanges of said bars and saidplates and securing said bars and said contacts in position.

5. A plug receptacle contact comprising a' main body portion having aresilientblade with a broad contact surface extending in the same planetherewith, means for supporting one end of said body portion, narrowspring arms integrally connected with the opposite side edges of saidbody portion and extending at approximately right angles thereto andterminating in reversely bent blades arranged between said arms andhaving independently resilient tips extendingbeyond the said arms in thesame general direction as the resilient blade of said main body portion,said tips having contact surfaces at right angles to the contact surfaceof said main body blade with a space between the bent blades for a plugblade, edges of said bent blades being close to andsubstantiallyparallel with the body portion and the contact surface ofsaid main body blade but spaced apart therefrom to permit the insertionof a plug blade.

CHARLES E. AVERY.

